Have they boys PLAYED / BEEN PLAYING computer games since this morning?
BEEN PLAYING
Have you TALKED / BEEN TALKING on the phone since eight o'clock?
BEEN TALKING
I think I've HEARD / BEEN HEARING that song before.
HEARD
Jo has already INVITED / BEEN INVITING Shirley to dinner.
INVITED
You've WRITTEN / BEEN WRITING that e-mail for over an hour. How long is it going to take you?
BEEN WRITING
They haven't ARRIVED / BEEN ARRIVING yet, but they should be here soon.
ARRIVED
I've READ / BEEN READING an interview with Brad Pitt, but I haven't finished it yet.
BEEN READING